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Gregor Mendal
He cross polinated pea plants and noticed that they follow certian patterns from parent to daughter cells. -
Friedrich Miescher
MOst famouse for his discovery of nucleic acid (DNA) -
Frederick Griffith
Griffith thought that the killed virulent bacteria had passed on a characteristic to the non-virulent one to make it virulent. He thought that this characteristic was in the inheritance molecule. This passing on of the inheritance molecule was what he called transformation. -
Thomas Hunt Morgan
He was most famous for discovering the role chromosomes play in heredity -
Frederick Sanger
He was the first person to obtain a protein sequence. By doing so, Sanger proved that proteins were ordered molecules and by analogy, the genes and DNA that make these proteins should have an order or sequence as well. -
Evwin Chargaff
He took samples of DNA of different cells and found that the amount of adenine was almost equal to the amount of thymine, and that the amount of guanine was almost equal to the amount of cytosine. -
Oswald Avery
He discoverd that DNA is the substance that makes up genes and chromosomes. -
Maurice Wilkins and Rosalind Franklin
Two scientists named, Rosalind Franklin and Maurice Wilkins, decided to try to make a crystal of the DNA molecule. If they could get DNA to crystallize, then they could make an x-ray pattern, thus resulting in understanding how DNA works. These two scientists were successful and obtained an x-ray pattern. The pattern appeared to contain rungs, like those on a ladder between to strands that are side by side. It also showed by an “X” shape that DNA had a helix shape. -
James Watson and Francis Crick
When they saw Franklin and Wilkin's picture of the X-ray they had enough information to make an accurate model. They created a model that has not been changed much since then. Their model showed a double helix with little rungs connecting the two strands. -
Hershy and Chase
They conducted a series of experiments to determine whether protein or DNA was the hereditary material. By labeling the DNA and protein with differentradioisotopes, they would be able to determine which chemical was getting into the bacteria. -
John Sulston
He is most famous for finding out how cells in C. elegans divide.
